Patent US2038689A successfully refreshed from Google Patents.
US2038689A
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Solid lubricant
Assignee: MCCOLL FRONTENAC OIL CO Ltd
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Filing: 1933-07-10
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Granted: 1936-04-28
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Expires: 1953-07-10
Abstract
No abstract record available.
Inventors
- 👤 Gavin R Taylor
- 👤 Richard N Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:27
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/06; C10M2201/063; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-04-28 | 1939-10-28 | 1940-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-28 | 1943-10-28 | 1944-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-28 | 1947-10-28 | 1948-04-28 | $7700.00 | Window Closed / Lapsed |